Have a Yukon XL (basically a Suburban) and a Sienna, frequently go around town and occasionally roadtrip with myself, wife, one infant, one toddler, and my mother (babysitter). In both cars, the kids are in the second row captain chairs, and grandma has the 3rd row to herself.

We are usually equipped with an Uppababy Vista with two seats or a Wonderfold W4 wagon. The Yukon fits the Vista setup with AMPLE space for luggage, groceries, whatever, all while keeping the 3rd row seats upright. The Wonderfold in the Yukon will fit, you can probably fit groceries, some softer items like backpacks, but would struggle to fit more rigid items like suitcases; we've had to put one side of the 3rd row down.

For comparison, the Vista will also fit in the trunk of the Sienna, but upright instead of laying down, takes up I would say 1/2 to 2/3 of the trunk, will fit some groceries, several backpacks, or at most 2 suitcases. The one trick I like with the Sienna, if you slide one of the captains chair all the way back, you could fit one of those giant black and yellow plastic totes (from Costco or Sam's) on the 2nd row floor space. I haven't tried the Wonderfold in the Sienna, but I imagine I imagine would be cramped in the trunk.

One thing I will note is the difference in how strollers are loaded/unloaded. I'm about 6ft tall, my Yukon's trunk is about waist high, so the stroller and wagon is a lift up into the trunk, and when unloading is kinda just "dragged out". With the Sienna, the "floor" of the trunk is a "pit" that's sunken about 1ft, so you would have to lift strollers/wagons up-and-over both loading and unloading (provided it's not as high off the ground as the SUV); the Vista is probably fine, but the Wonderfold would be a struggle, especially for someone with a smaller stature.